Temporal aspects of the VO2 response at the power output associated with VO2peak in well trained cyclists--implications for interval training prescription
Laursen, PB and Shing, CM and Jenkins, DG, Temporal aspects of the VO2 response at the power output associated with VO2peak in well trained cyclists--implications for interval training prescription, Research quarterly for exercise and sport, 75, (4) pp. 423-428. ISSN 0270-1367 (2004) [Refereed Article]
The power output achieved at peak oxygen consumption (VO 2peak) and the time this power can be maintained (i.e., Tmax) have been used in prescribing high-intensity interval training. In this context, the present study examined temporal aspects of the VO 2 response to exercise at the cycling power that output well trained cyclists achieve their VO 2peak (i.e., Pmax). Following a progressive exercise test to determine VO 2peak, 43 well trained male cyclists (M age = 25 years, SD = 6; M mass = 75 kg, SD = 7; M VO 2 peak = 64.8 ml·kg -1·min -1, SD = 5.2) performed two Tmax tests 1 week apart. Values expressed for each participant are means and standard deviations of these two tests. Participants achieved a mean VO 2peak during the Tmax test after 176 s (SD = 40; M = 74 % of Tmax, SD = 12) and maintained it for 66 s (SD = 39; M = 26% of Tmax, SD = 12). Additionally, they obtained mean 95 % of VO 2peak after 147 s (SD = 31; M = 62 % of Tmax, SD = 8) and maintained it for 95 s (SD = 38; M = 38 % of Tmax, SD = 8). These results suggest that 60-70 % of Tmax is an appropriate exercise duration for a population of well trained cyclists to attain VO 2peak during exercise at Pmax. However, due to intraparticipant variability in the temporal aspects of the VO 2 response to exercise at Pmax, future research is needed to examine whether individual high-intensity interval training programs for well trained endurance athletes might best be prescribed according to an athlete's individual VO 2 response to exercise at Pmax.